Beating engine



' July '31, 1928.

1,679,056 L. SHLICK 4 I SEATING ENGINE Filed F 1'7- 1921 2 Sheets-Sheet Inve nibv, Leo Shlick;

Patented July 31-, 1928.

UNITED ESTATES PATENT OFFICE.

' IBEATING ENGINE.

Application filed February 17, 1921. Serial No. 445,737.

the bed-plate, and for delivering this Water to the stock after leaving the bed-plate.

Referring to the drawings forming part of this specification, Fig. 1 is a plan view of a beating engine embodying my improvements, certain. parts being removed. Fig. 2 is a side view of the same, a part being sectional. Fig. 3 is a sectional view at right angles to Fig. -2.- Fig. 4 is a longitudinal section'of the beater roll. Fig. 5 is a cross section of the same. Fig. 6 is a section of the bed-plate. Fig. 7 is a sectional View of another form of the bed-plate.

The tub 1 is preferably made circular, with a hollow midfeather 2, and two diametrically opposed beater rolls 3, located in the annular channel 4, bed-plates 5 being disposed beneath each roll. The shaft 6 of each roll is supported in bearings 7 carried by lever arms 9 pivoted at 10 to the walls of the tub and midfeather, each arm having a rack 12 meshing with pinions 13 mounted upon a shaft 14. An arm 15 fixed to the shaft 14 and having a counterweight 16 serves to partially counterbalance the beater roll 3.

As shown in Figs. 1 and-3, the knives 17 on the beater roll are not parallel with the shaft, but are advanced at one end, so that the corresponding ends of the knives will .reach the bed-plate 5 before their opposite ends, by preference the ends adjacent the wall 8 being the ones first to engage the bed-plate. These are not straight, but curved so that the convex edges move toward the bed-plate as the roll revolves; whereby the air entrained between the knives 17 is made to begin its lateral journey quite slowly, and then is made rapidly to lncrease it as the wall 11 is neared.

" Through the tub-wall 11 is a hole suitably screened and opening into a ipe 19 whose opposite end is connected with a suction pump of preferably the blower type, as20, this hole 18 being beside the beater roll.

Hence, as the stock reaches the beater roll and bed-plate, and is acted upon thereby,'the air entrained in the water and pulp is forced along the blades 17 toward the hole 18, through which it is drawn by the suction pump, thereby materially reducing the volume of the stock being treated ,.and

hastening the beater action.

Above the beater roll is located a hood 21 which passes over and beyond the same and then descends, as at 22, to compose one Wall ofa catch basin 23. At itsopening facing the roll 3 are suspended a-series of rods 24 descending nearly into the mouth of a trough 25; and revolubly located above the patch basin 23 isa tubular shaft 26 provided with diametrically disposed arms 27 adapted to sweep along the rods 24 to the latters extremities, for the purpose of clearing therefrom any strings or fibers clinging thereto. Further to aid this cleaning actlon, water is admitted into the tubular shaft 26, as at 29, which by its escape through perforations 28 in the shaft near the bases of the arms 27, flows down the,

and is thrown by by the screen rods 24 and swept into the V trough 25, as above described.

. As a further improvement, the tub 1 is mounted on trunnions, as at 30 and 31, and is provided with a screw rod 32 penetrating a lug '33 projecting from an end of the tub, as shown in Fig. 2, and anchored )to the floor. By turning its hand wheel 34, the tub is brought to an even keel, or tilted to a slight angle fore and aft, as may be desired for varying the circulation of the stock in the tub.

By having the arm 15 projecting in opposite directions from the shaft 14, the pressure of the beater roll 3 can be adjusted through a wide range, either to make it much less than normal, or much more, as may be desired for the work.

Although the pipe'19 may serve to withdraw the entrained air from the pulp being beaten, it also serves to remove a considerable proportion of the water expressed from the pulp and to discharge the same through a pipe 36 at a point behind the back-fall, as at 35, in order to form'a film of the thin pulp and water between the surface of the tub l and the main body of the pulp as it rounds the ends of the midfeather, and

thereby ease and speed the flow thereat.

Moreover, by thus providing a more or less strong suction or vacuum in the vicinity of the beater roll, I obtain the benefit of a materially increased circulation of the pulp, and at the same time a decreased expenditure of power.

As shown in Fig. 1, the tub I is preferably made circular in plan, and the midfeather is also substantially circular and hollow. At diametrically opposite points in the tub are located two beater rolls 3, each supplied with a bed plate 5. By thus providing a circular channel for the stock, the latter circulates more rapidly and the beater rolls can be run faster, thereby turning out the product more expeditiously.

As shown in Figs. 4 and 5, the beater roll 3 is provided with a series of knives 17 spaced from each other sufiiciently to make room for a row of lugs 38 between each pair of the knives, for the support of the fly beaters 39 pivotally supported on a rod 40 loosely penetrating the beaters and lugs. Thus formed, the beater roll is enabled to give the pulp as it passes over the bedv plate a more thorough flagellation and maceration than is otherwise possible.

As shown in Fig. 2, each beater roll 3 is provided with a vertically adjustable deflector 41 which is designed to rise and fall with the beater roll. To accomplish this, the deflector is slidably carried by the hood 21 to move toward and from the back of the roll, and is connected with the lever arms 9 by suitable means, as rods 42 pivotally attached to the arm. Thus arranged. the deflector remains at a uniform distance from the periphery of the roll whatever the adjustment in height given to the latter.

A most important improvement in the bedplates is that shown in Fig. 6, which not only illust'ratesthe knives 43 as extending through a wide are beneath the roll 3,' hut as having their operative portions presented radially to the roll. This gives like cutting edges throughout the full extent of the hed-plat'e, so. that not only can all be shaped and ground exactly alike, hut their eoaction with the heater roll will he more. uniform and perfect. Although I do not restrictmyself thereto, I prefer to have the seat 44 on which these knives rest concentric with the roll in order to'havethe knives all alike. Were the seat 44 horizontal, the knives would require to vary in dimensions and have the edges bent, as shown in Fig. 7, but the operative portions of the knives are radially disposed. In Fig. 6, the knives 43 are illustrated as varying in thickness, those first met by the fly-bars being the thickest. The advantage of this is to have the knives the strongest which bear the shock of the heaviest cutting. After the fibres have been first acted upon, the following knivescan be thinner and hence nearer together and the number so much the larger in the same space.

' As shown in Fig. 1, the approach of the stock to the beater rolls 3 is at an acute angle relativeto the peripheries thereof, thereby aiding in the expulsion of the entrained air from the stock, and so rendering the maceration thereof more perfect and expeditious.

As shown in Fig. 2, the hood 21 which is circular immediately above the crest of the back-fall, with its concave surface below, is extended along the top edges of the side walls of the tub 1 tangential to the curvafoot of the back-fall. By thus providing the hood with a curvature concentric with the crest of the back-fall, and an extension selves, drop into the stock, and cause spots and stips in the resulting paper. The constant flow of stock along the under surface of the hood and its extension prevents ture, and thence on to a point beyond the 1 any such accumulations, While at the same time the extension shields any of the stock from spattering out over the top walls of the tub.

What I claim is:

,1. A beating engine comprising a tub, a

midfeather, a bed-plate, a heater roll having a supporting shaft, levers each pivotally supported at one end of each and having a rack at its other end, a shaft having pinions meshing with said racks, and a weighted lever rigid with the last-named shaft, whereby the pressure of the said roll upon the bedplate can be Varied at will.

v 2. A beating engine comprising a tub, a heater roll, a bed-plate, a back-fall, and means for withdrawing the entrained air from the ends of the bed-plate knives and tiliseharging it upon the surface of the backall.

3. A beating engine comprising a tub," a heater roll, a bed-plate, aback-fall, the wall of the tub being formed with an opening means for withdrawin the entrained air from said knives and y-bars during their mutual engagement and discharging it upon the rear surface of theback-fall.

4. A beating engine comprising a tub, a beater roll, a bed-plate, a back-fall, the wall i v of the tub having an opening through it at said opening.

the end of the beater roll adjacent the bedplate, and means for withdrawing "the entrained air from the adjacent knives and flybars of said .roll and bed-plate, and delivering it to the rear of the back-fall in a direction parallel with the surface'of said rear.

5. A beating engine comprising a tub, a beater roll having fly-bars whose longitudinal lines are out of parallel with its axis, the tub having an opening through it at the end of the roll where its fly-bars last reach.

ing it to the rear of the back-fall parallel with the surface of the latter.

7. A beating engine having a beater roll, a bed-plate, a midfeather, a tub containing said midfeather and having a screened opening through its wall adjacent an end of the beater roll, and a fan pump connected with 8. A beating engine having a tub; a heater roll, a bed-plate, and means for creating a partial vacuum at an end of the beater roll. 9. A beating engine having a heater roll,

a bed-plate, a tub provided with an opening adjacent an end of the beater roll, a screen for said .opening, a fan pump connected with said opening for conveying the discharge from said opening back to the tub in the rear of the beater roll.

. 10. A beating engine comprising a tub, a beater roll,- a bed-plate, a hood located over the beater roll and terminatin in a catch basin, a screen composed of vertlcal bars susbasin,

pended between the beater roll and the catch 11. A beating engine coinprising-atub, a

beater roll, a bed-plate, a hood located over catch basin,

the bea-ter roll and terminating in a catch basin, a screen composed of .vetrical bars suspended between the bea ter :roll 'an'ol'the means for adjustably spacing saidv bars, and mechanical means for auto -matically wiping said bars.

andmechanical means for automate, .cally wiping said bars.

12. A liueating engine comprising a tub, a beater rol, a .bed-plate,.a hood located over the beater roll and terminating in a catch basin, a screen composed of vertical bars sus upended between the beater roll and the "catch basin, a rotatable shaft, and radial arms pr0- jecting'froni' said shaft into wiping engage- 'ment with said bar s.

13. A beating engine comprising a tub, a beater roll, a bed-plate, a hood located over the beater roll and terminating in a catch' basin, a screen composed of vertical bars suspended between the beater roll and the catch basin, a' tubular rotatable shaft, arms radially projecting from said shaft 'into wiping engagement'with said bars, and means for supplying said shaft being'perforated to permit the water to reach said arms and bars.

14. A beating engine comprising a tub, a A

85 its angular position relative to the horizon.

beater roll and a bed-plate, the tub having means for varying 15. A beating enginecomprisinga tub, a beater roll, and bed-plate, means for angularly varying the channel for rendering. the flow faster or slower.

so I

shaft with water, the

the tub having 1 6; A beating engine comprising a tub,.

a beater roll, a bed-plate, trunnions supporting the tub on an axis substantially that of said roll, and means for'adjusting the tub upon said trunnions.

17. A beating engine comprising a tub, a beater roll, a bed plate, trunnion supportsaid roll, and means embracing a screw rod and hand tub.

18. In a beating engine, a beater roll hav- 2 inglongitudinally curved fly-bars adapted to present their. convex edges to thebedplate, the center of curvature of each fly-bar belipg between the planes of the ends of the r0 {19. In a beating engine, a heater roll having alternate rows of blades and pivotally supported heaters.

20. In a beating engine, a heater roll having, spaced knives alternating with rows of lugs, and beater elements pivotally supported by said lugs. 7

21.'In a beating engine, a bed-plate having a'series ofknives radially disposedrelative to the beater roll and varying in thickmess. I

' 22. In a beating engine, a bed-plate having a series ofknlves varying'in thickness, the lowermost knives being the thickest.-

23. A beating engine comprising a tub, a1 having its topmost beater roll, a back-fall point above the level of the axis of-the roll, a hood located above the back-fall, a movable deflector depending from the hood close to ing the tub on an axis substantially that of wheel for adjustably tilting said- 90 I which delivers the stock of the beater roll the back surface of the roll, and means for moving the deflector in unison With the movements of the roll, said means embracing racks secured to the deflector, toothed segments engaging the racks, and operative connection between the roll and segments.

2s. A beating engine comprising a tub, a beater roll, pivoted levers supporting the roll, a back-fall having its crest above the level of the axis of the roll, a hood located above the back-fall, a movable deflector depending from the hood close to the back surface of the roll, a pivotally supported lever, a connection between the latter and one of the first-mentioned levers, and means whereby the movements of the second-mentioned lever correspondingly shift the deflector.

25. A beating engine comprising a tub, a beater roll, ivoted levers supporting the roll, a back-fall, a hood located above the back-fall, a movable deflector depending from the hood close to the back surface of the roll and levers pivotally supported and connected With the first-named lever and the deflector, the connection With the deflector permitting of adjustment.

In testimony that I claim the foregoing invention I have hereunto set my hand this 15th day of February, 1921.

LEO SHLICK. 

